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WO2002001924A3 - Unité de commande de lampe fluorescente à cathode froide - Google Patents

Unité de commande de lampe fluorescente à cathode froide Download PDF

Info

Publication number
WO2002001924A3
WO2002001924A3 PCT/US2001/019458 US0119458W WO0201924A3 WO 2002001924 A3 WO2002001924 A3 WO 2002001924A3 US 0119458 W US0119458 W US 0119458W WO 0201924 A3 WO0201924 A3 WO 0201924A3
Authority
WO
WIPO (PCT)
Prior art keywords
cold cathode
cathode fluorescent
dimming range
fluorescent lamp
lamp controller
Prior art date
Application number
PCT/US2001/019458
Other languages
English (en)
Other versions
WO2002001924A2 (fr
Inventor
Urs Mader
Henry Chu
Roger Chen
Original Assignee
Maxim Integrated Products
Urs Mader
Henry Chu
Roger Chen
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maxim Integrated Products, Urs Mader, Henry Chu, Roger Chen filed Critical Maxim Integrated Products
Publication of WO2002001924A2 publication Critical patent/WO2002001924A2/fr
Publication of WO2002001924A3 publication Critical patent/WO2002001924A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC using static converters with semiconductor devices
    • H05B41/2821—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC using static converters with semiconductor devices by means of a single-switch converter or a parallel push-pull converter in the final stage
    • H05B41/2824—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC using static converters with semiconductor devices by means of a single-switch converter or a parallel push-pull converter in the final stage using control circuits for the switching element
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/39—Controlling the intensity of light continuously
    • H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
    • H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
    • H05B41/3927—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by pulse width modulation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00—Electric lamp and discharge devices: systems
    • Y10S315/04—Dimming circuit for fluorescent lamps

Landscapes

  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

Cette invention a trait à une commande en boucle fermée de la tension d'un transformateur dans un convertisseur de Royer pour lampes fluorescentes à cathode froide, afin d'assurer une large plage de gradation, de l'ordre, par exemple de 100/1. On arrive à cette plage de gradation par combinaison d'une régulation du courant et d'une régulation des impulsions, ce qui permet d'obtenir une plage plus importante que celle que l'on obtiendrait si l'on ne régulait que le courant. L'invention porte également sur divers éléments complémentaires et offre d'autres possibilités.
PCT/US2001/019458 2000-06-27 2001-06-18 Unité de commande de lampe fluorescente à cathode froide WO2002001924A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/604,611 2000-06-27
US09/604,611 US6469454B1 (en) 2000-06-27 2000-06-27 Cold cathode fluorescent lamp controller

Publications (2)

Publication Number Publication Date
WO2002001924A2 WO2002001924A2 (fr) 2002-01-03
WO2002001924A3 true WO2002001924A3 (fr) 2002-06-20

Family

ID=24420312

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/019458 WO2002001924A2 (fr) 2000-06-27 2001-06-18 Unité de commande de lampe fluorescente à cathode froide

Country Status (2)

Country Link
US (1) US6469454B1 (fr)
WO (1) WO2002001924A2 (fr)

Families Citing this family (24)

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US6114814A (en) * 1998-12-11 2000-09-05 Monolithic Power Systems, Inc. Apparatus for controlling a discharge lamp in a backlighted display
US6804129B2 (en) 1999-07-22 2004-10-12 02 Micro International Limited High-efficiency adaptive DC/AC converter
US6501234B2 (en) * 2001-01-09 2002-12-31 02 Micro International Limited Sequential burst mode activation circuit
US6936975B2 (en) 2003-04-15 2005-08-30 02Micro International Limited Power supply for an LCD panel
WO2005038828A2 (fr) 2003-10-06 2005-04-28 Microsemi Corporation Circuit de partage de courant et dispositif pour faire fonctionner de nombreuses lampes ccf
TWI231465B (en) * 2003-11-14 2005-04-21 Au Optronics Corp Driving circuit for liquid crystal display and liquid crystal display using the driving circuit
US7098605B2 (en) * 2004-01-15 2006-08-29 Fairchild Semiconductor Corporation Full digital dimming ballast for a fluorescent lamp
KR100629510B1 (ko) * 2004-01-29 2006-09-28 삼성전자주식회사 백라이트 인버터 시스템 및 그 시동 제어 방법
US7012380B2 (en) * 2004-06-24 2006-03-14 Dell Products L.P. Information handling system with dual mode inverter
EP1803335B1 (fr) * 2004-10-22 2015-01-07 Osram-Sylvania Inc. Ballast comprenant un convertisseur de commutation de tension nulle
FR2882870B1 (fr) * 2005-03-01 2007-08-10 Thales Sa Oscillateur de royer a electronique de decharge
TWI285350B (en) * 2005-07-29 2007-08-11 Innolux Display Corp A liquid crystal display
CN100468135C (zh) * 2005-11-03 2009-03-11 群康科技(深圳)有限公司 背光开路保护电路
US7768806B2 (en) * 2006-12-11 2010-08-03 O2Micro International Limited Mixed-code DC/AC inverter
KR20130088890A (ko) * 2008-04-24 2013-08-08 인다이스 피티와이 엘티디 전력제어
US20100329293A1 (en) * 2009-06-26 2010-12-30 Battelle Memorial Institute Methods and Apparatus for Efficient, Low-noise, Precision Current Control
US20100327963A1 (en) * 2009-06-26 2010-12-30 Battelle Memorial Institute Active Snubbers Providing Acceleration, Damping, and Error Correction
EP2576119B1 (fr) * 2010-05-28 2015-08-05 Esab AB Système de soudage à l'arc court
CN103003020B (zh) * 2010-05-28 2015-08-19 依赛彼公司 短弧焊接系统
US8816606B2 (en) 2010-06-15 2014-08-26 Microsemi Corporation Lips backlight control architecture with low cost dead time transfer
CN102300356A (zh) * 2010-06-22 2011-12-28 英飞特电子（杭州）有限公司 光源控制方法、装置及系统
CN102300379B (zh) * 2010-06-24 2014-12-17 昂宝电子（上海）有限公司 用于调节冷阴极荧光灯的亮度的系统和方法
TWI458393B (zh) * 2010-08-10 2014-10-21 昂寶電子（上海）有限公司 用於調節冷陰極螢光燈的亮度的系統和方法
FR2976150B1 (fr) 2011-06-01 2013-06-14 Thales Sa Dispositif de commande de diodes electroluminescentes a tres grande dynamique de luminance pour ecran de visualisation

Citations (3)

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Publication number Priority date Publication date Assignee Title
EP0259603A1 (fr) * 1986-08-08 1988-03-16 Hughes Aircraft Company (a Delaware Corporation) Dispositif pour la mise en oeuvre d'un tube fluorescent
GB2314430A (en) * 1996-06-19 1997-12-24 Kijima Co Ltd Inverter with regulated output
US5754012A (en) * 1995-01-25 1998-05-19 Micro Linear Corporation Primary side lamp current sensing for minature cold cathode fluorescent lamp system

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US5055767A (en) 1990-06-29 1991-10-08 Linear Technology Corporation Analog multiplier in the feedback loop of a switching regulator
US5272327A (en) * 1992-05-26 1993-12-21 Compaq Computer Corporation Constant brightness liquid crystal display backlight control system
US5652479A (en) 1995-01-25 1997-07-29 Micro Linear Corporation Lamp out detection for miniature cold cathode fluorescent lamp system
US5844378A (en) 1995-01-25 1998-12-01 Micro Linear Corp High side driver technique for miniature cold cathode fluorescent lamp system
US5965989A (en) 1996-07-30 1999-10-12 Micro Linear Corporation Transformer primary side lamp current sense circuit
US5896015A (en) 1996-07-30 1999-04-20 Micro Linear Corporation Method and circuit for forming pulses centered about zero crossings of a sinusoid
US5818669A (en) 1996-07-30 1998-10-06 Micro Linear Corporation Zener diode power dissipation limiting circuit
US5923129A (en) * 1997-03-14 1999-07-13 Linfinity Microelectronics Apparatus and method for starting a fluorescent lamp
US6114814A (en) 1998-12-11 2000-09-05 Monolithic Power Systems, Inc. Apparatus for controlling a discharge lamp in a backlighted display
US6215680B1 (en) * 2000-05-24 2001-04-10 Garmin Corporation Circuit for obtaining a wide dimming ratio from a royer inverter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0259603A1 (fr) * 1986-08-08 1988-03-16 Hughes Aircraft Company (a Delaware Corporation) Dispositif pour la mise en oeuvre d'un tube fluorescent
US5754012A (en) * 1995-01-25 1998-05-19 Micro Linear Corporation Primary side lamp current sensing for minature cold cathode fluorescent lamp system
GB2314430A (en) * 1996-06-19 1997-12-24 Kijima Co Ltd Inverter with regulated output

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
"Application notes LT1186F: DAC Programmable CCFL Switching Regulator", 1995, LINEAR TECHNOLOGY, MILPITAS, USA, XP002185157 *
DONAHUE J A ET AL: "THE LCC INVERTER AS A COLD CATHODE FLUORESCENT LAMP DRIVER", PROCEEDINGS OF THE ANNUAL APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC). ORLANDO, FEB. 13 - 17, 1994, NEW YORK, IEEE, US, vol. 1 CONF. 9, 13 February 1994 (1994-02-13), pages 427 - 433, XP000467348 *
GEORGE A. HALL & URS MADER: "Application Note 42010: Theory an Application of the ML4874 and ML4876 LCD Backlight Controller ICs", June 1996, FAIRCHILD SEMICONDUCTOR, USA, XP002185156 *
LIN M-S ET AL: "A COLD-CATHODE FLUORESCENT LAMP DRIVER CIRCUIT WITH SYNCHRONOUS PRIMARY-SIDE DIMMING CONTROL", IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, IEEE INC. NEW YORK, US, vol. 45, no. 2, 1 April 1998 (1998-04-01), pages 249 - 255, XP000740818, ISSN: 0278-0046 *
NALBANT ET AL: "A new CCFL inverter circuit far AMLCD panels results in significantly higher efficiency and brightness", ACTIVE MATRIX LIQUID CRYSTAL DISPLAYS, 1995. AMLCDS '95., SECOND INTERNATIONAL WORKSHOP ON BETHLEHEM, PA, USA 25-26 SEPT. 1995, NEW YORK, NY, USA,IEEE, US, 25 September 1995 (1995-09-25), pages 133 - 136, XP010199784, ISBN: 0-7803-3056-0 *
REDL ET AL: "A low-cost control IC for single-transistor ZVS cold-cathode fluorescent lamp inverters and DC/DC converters", APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION, 1997. APEC '97 CONFERENCE PROCEEDINGS 1997., TWELFTH ANNUAL ATLANTA, GA, USA 23-27 FEB. 1997, NEW YORK, NY, USA,IEEE, US, 23 February 1997 (1997-02-23), pages 1042 - 1049, XP010215787, ISBN: 0-7803-3704-2 *

Also Published As

Publication number Publication date
US6469454B1 (en) 2002-10-22
WO2002001924A2 (fr) 2002-01-03

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